Restricted-Use Dataset Descriptions
Restricted-use, contractual data are available in the following datasets. Click the dataset title to access the associated codebook(s). For more information about obtaining these data, please read About Restricted-Use Data.
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CORE FILES (Study #27021)
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DESCRIPTION |
ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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A merged file containing the Wave I In-Home Interview data, the Parent Questionnaire data (when available), the In-School Questionnaire data (when available), and the Add Health Picture Vocabulary data (when available), collected in 1994–1995. |
27021-0001 |
2,820 |
20,745 |
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Wave II In-Home Interview Data Data collected during the 1996 in-home interview. |
27021-0002 |
2,540 |
14,738 |
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Wave III In-Home Interview Data Respondent-level data collected during the 2001–2002 in-home interview includes field interviewer characteristics, AHPVT. |
27021-0003 through 27021-0011 |
1,876 |
15,197 |
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Wave IV In-Home Interview Data Data collected during the 2008 in-home interview. |
27021-0012 through 27021-0018 |
974 |
15,701 |
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Wave I and II School Administrator Questionnaires Information from the Wave I (self-administered), Wave II (phone-administered) questionnaires answered by administrators at the sampled schools. |
27021-0020 through 27021-0021 |
WI: 189 WII: 100 |
WI: 172 WII: 128 |
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Additional information about the individual schools. |
27021-0022 |
20 |
172 |
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Wave I In-School Questionnaire Data Adolescent responses to the In-School Questionnaire administered September 1994 through April 1995. |
27021-0019 |
227 |
90,118 |
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Variables needed to correct for design effects and weight the Wave I in-home data. |
27021-0025 |
4 |
20,745 |
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Variables needed to correct for design effects and weight the Wave II in-home data. |
27021-0026 |
4 |
14,738 |
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Variables needed to correct for design effects and weight the Wave III in-home data, including longitudinal and cross-sectional weights. |
27021-0027 |
5 |
15,197 |
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Variables needed to correct for design effects and weight the Wave IV in-home data, including longitudinal and cross-sectional weights. |
27021-0028 |
5 |
15,701 |
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Variables needed to correct for design effects and weight the Wave I school administrator data. |
27021-0023 |
3 |
164 |
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Variables needed to correct for design effects and weight the Wave I in-school data. |
27021-0024 |
7 |
90,118 |
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FRIEND FILES (Study #27022)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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Wave I In-School Friendship Nominations Identification numbers of the friends that the respondent nominated during the in-school interview. |
27022-0003 |
11 |
90,118 |
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Wave I In-Home Friendship Nominations Identification numbers of the friends that the respondent nominated during the Wave I in-home interview. |
27022-0001 |
12 |
20,745
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Wave II In-Home Friendship Nominations Identification numbers of the friends that the respondent nominated during the Wave II in-home interview. |
27022-0002 |
11 |
14,738
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Add Health respondents who were in the 7th or 8th grade at Wave I were asked at Wave III to identify, from a list of 10 computer-generated names, which ones were current friends or which ones were their friends when they were in school together. This dataset contains the altered identification numbers (AIDs) of the 10 computer-generated names. |
27022-0004 |
11 |
3,572 |
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SIBLING FILES (Study #27023)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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Information that links and describes the sibling pairs. |
27023-0001 |
11 |
3,139 |
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At Wave III, Add Health respondents were asked questions about their siblings who also participated in the Wave I or II in-home interviews. This dataset contains the AIDs for these siblings. |
27023-0002 |
10 |
4,368 |
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CONTEXTUAL FILES (Study #27024)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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Community contextual variables based on state, county, tract, and block group levels derived from the Wave I addresses. |
27024-0001 |
2,682
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20,745
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Community contextual variables based on state, county, tract, and block group levels derived from the Wave II addresses. |
27024-0002 |
2,682
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14,738
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Community contextual variables based on state, county, tract, and block group levels derived from the Wave III addresses. |
27024-0003 |
594 |
15,197 |
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X, Y coordinates that can be used to calculate distances between friends in a school community. |
27024-0004 |
4 |
20,301 |
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Pseudo state, county, tract, and block group variables that allow grouping of Add Health respondents geographically (based on Wave I addresses). |
27024-0005 |
5 |
20,745
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Pseudo state, county, tract, and block group variables that allow grouping of Add Health respondents geographically (based on Wave II addresses). |
27024-0006 |
5 |
14,738 |
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Pseudo state, county, tract, and block group variables in FIPS code format that allow grouping of Add Health respondents geographically (based on Wave III addresses). |
27024-0007 |
2 |
15,197 |
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This file contains the Census region codes for the respondents’ Wave III residential locations. |
27024-0008 |
2 |
15,197 |
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This file contains the Census region codes for the respondents’ Wave IV residential locations. |
27024-0009 |
2 |
15,197 |
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WAVE III SUPPLEMENTAL FILES (Study #27025)
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DESCRIPTION |
ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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To receive the results of their STD assays, Wave III respondents called an Add Health dedicated number at the American Social Health Association. This dataset provides information on who called the results hotline and the date and time of the call. |
27025-0001 |
75 |
4,279 |
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The masculinity and femininity raw and standard scores from the 30 item short form BEM Sex-Role Inventory are available in this file. |
27025-0002 |
5 |
15,197 |
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This file contains the cotinine and 3-hydroxycotinine assay values for 963 Wave III respondents. |
27025-0003 |
5 |
963 |
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Assay results for human papillomavirus and mycoplasma genitalium are available for a subset of the Wave III respondents who provided a urine sample. |
27025-0004 |
46 |
5,126 |
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For Wave III respondents who reported having a mentor, the open-ended responses to the question “How did {HE/SHE} help you?” have been coded and are available in this file. |
27025-0005 |
17 |
15,197 |
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This file contains nitrate, specific gravity, pH level, white blood cells, protein, glucose, ketone, urobilinogen, bilirubin, microalbumin, urine creatinine, and blood values from the Wave III urine specimens. |
27025-0006 |
16 |
15,197 |
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Wave III HPV-MGEN Assay Weights Sample weights for respondents with HPV and MGEN assay results are in this file. |
27025-0007 |
5 |
14,322 |
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WEIGHT COMPONENTS (Study #27026)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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Wave I In-Home Weight Components A weight component for each level of sampling (school and adolescents) has been created for each wave of data collection. This file contains the weight components needed for computing multilevel weights for Wave I. |
27026-0001
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5 |
20,745 |
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Wave II In-Home Weight Components A weight component for each level of sampling (school and adolescents) has been created for each wave of data collection. This file contains the weight components needed for computing multilevel weights for Wave II. |
27026-0002 |
5 |
14,738 |
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Wave III In-Home Weight Components A weight component for each level of sampling (school and adolescents) has been created for each wave of data collection. This file contains the weight components needed for computing multilevel weights for Wave III. |
27026-0003 |
6 |
15,197 |
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A weight component for each level of sampling (school and adolescents) has been created for each wave of data collection. This file contains the weight components needed for computing multilevel weights for Wave IV. |
27026-0006 |
6 |
15,701 |
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A weight component for each level of sampling (school and adolescents) has been created for each wave of data collection. This file contains the weight components needed for computing multilevel weights. |
27026-0004 |
8 |
90,118 |
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The initial weights for the school are in this file. |
27026-0005 |
2 |
132 |
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EDUCATION FILES (Study #27030)
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DESCRIPTION
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ICPSR STUDY # |
FILES |
OBSERVATIONS
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These files contain academic status and/or performance indicators for math, science, foreign language, English, history, social sciences, physical education, and a combined overall category. |
27030-0001 through 27030-0006 |
6 |
12,237 |
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The Network files provide information on social networks based on the respondents’ course-taking patterns. |
27030-0007 through 27030-0009 |
3 |
varies by file |
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School level contextual data are from the Common Core of Data (CCD), Private School Survey (PSS), the1990 and 2000 Census, and the Office of Civil Rights. |
27030-0010 through 27030-0015 |
6 |
varies by file |
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The data in this file are needed for merging the course-level curriculum data with other Education Files. |
27030-0016 |
1 |
516,146 |
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These math and science curriculum data are derived from coding the textbooks schools reported using for each course offered in these two subjects. |
27030-0017 through 27030-0024 |
8 |
varies by file |
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This file contains variables designed to link transcript data to academic or school years and to Add Health. |
27030-0025 |
1 |
12,237 |
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The Primary Component contains several types of indicators based on information collected from participating schools and listed directly on student transcripts such as student exit or graduation status and materials gathered from schools during the data collection process. |
27030-0028 through 27030-0030 |
5 |
varies by file |
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This file contains variables explaining the respondents’ movement through the educational system. |
27030-31 |
1 |
12,217 |
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Files contain weights for the education data along with the school weights needed for HLM analysis. |
27030-0032 & 27030-0033 |
2 |
varies by file |
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GENETIC FILES (Study #27031)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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Twin and full siblings interviewed at Wave III were asked to provide saliva samples for DNA analysis. This file contains the genotype values for DAT1 (dopamine transporter), DRD4 (dopamine receptor), and SLC6A4 (serotonin transporter), MAOA_V (monoamine oxidase A-uVNTR), DRD2 (dopamine D2 receptor), and CYP2A6 (cytochrome P450 2A6) from these samples. Also included are values for the following SNPs: rs2304297, rs892413, rs4950, rs13280604. |
27031-0001 |
24 |
2,574 |
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Contains genotyping results for all Wave IV respondents who agreed to provide a saliva sample for DNA testing. This dataset has values for DAT1 (dopamine transporter), DRD4 (dopamine receptor), MAOA (monoamine oxidase A-uVNTR), 5HTTLPR (serotonin transporter), HTTLPR La-Lg-S, and triallelic activity bins for the serotonin transporter 5HTTLPR adjusted for rs25531 |
27031-0002 |
17 |
15,701 |
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CONSTRUCTED VARIABLES (Study #27033)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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Network variables constructed from the in-school questionnaire data and friendship nominations. |
27033-0002 |
440 |
75,871 |
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This file contains constructed variables on stress, depression, mastery, personality, arrest history, sexual behavior, smoking, and substance abuse created by Wave IV collaborators. |
27033-0003 |
49 |
15,701 |
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DISPOSITION FILES (Study #27034)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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Wave I and II Disposition File This file contains the types of data available for the Wave I respondents along with the outcome of the 16,706 respondents selected for Wave II. |
27034-0003 |
9 |
20,745 |
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This file contains the final outcome of the 20,058 cases fielded at Wave III. |
27034-0001 |
3 |
20,058 |
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This file contains the final outcome of the 19,962 cases fielded at Wave IV. |
27034-0002 |
2 |
19,962 |
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WAVE I & III OBESITY AND NEIGHBORHOOD ENVIRONMENT (ONE) FILES(Study #27881)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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This file contains the climate data for each Wave III respondent based on the nearest climate station. Information is available on precipitation, total snowfall, sky cover, temperature, and total hours of sunshine. |
27881-0001 & 27881-0012 |
WI: 25 WIII: 25 |
WI: 20,745 WIII: 15,197 |
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Wave I and III Street Connectivity Files These files contain road network connectivity measures within 1, 3, 5, and 8.05 km (5 miles) of the Wave I and III respondent locations. |
27881-0002 & 27881-0013 |
WI: 57 WIII: 57 |
WI: 20,745 WIII: 15,197 |
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The county-level crime data in these files are based on the Wave I and III respondent locations. |
27881-0003 & 27881-0014 |
WI: 8 WIII: 8 |
WI: 20,745 WIII: 15,197 |
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The data source of the Wave I and III respondent residential geocodes (latitude and longitude) are provided in these files. |
27881-0004 & 27881-0015 |
WI: 2 WIII: 2 |
WI: 20,745 WIII: 15,197 |
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Wave I and III Land Cover Data These files contain land cover metrics within 1, 3, 5, and 8.05 km (5 miles) of Wave I and III respondent locations. |
27881-0005 & 27881-0016 |
WI: 237 WIII: 237 |
WI: 20,745 WIII: 15,197 |
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The counts of public parks within a Euclidean distance of 1, 3, 5, and 8.05 kilometers (5 miles) of each respondent at Wave I and III are in these files. |
27881-0006 & 27881-0019 |
WI: 43 WIII: 43 |
WI: 20,745 WIII: 15,197 |
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These Add Health files provide data on the presence of various physical activity (PA) resources situated near respondent residences at Wave I and III. |
27881-0008 & 27881-0021 |
WI: 749 WIII: 3741 |
WI: 20,745 WIII: 15,197 |
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Wave I and III Urban Distances Contains Euclidean distances to both 1990 and 2000 U.S. Census Urbanized Areas (UAs) for each Wave I respondent. Contains the Euclidean distance to 2000 U.S. Census Bureau-defined urbanized areas (UAs) for each Wave III respondent. |
27881-0010 & 27881-0022 |
WI: 3 WIII: 2
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WI: 20,745 WIII: 15,197 |
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This file contains weather data for each Wave III respondent based on the nearest weather station reporting data for the corresponding survey month and year. |
27881-0011 & 27881-0023 |
WI: 8 WIII: 8
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WI: 20,745 WIII: 15,197 |
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Wave I and III Population Density Data The Wave I population density file contains the proportion of 1990 U.S. Census block group population and are (in square meters) within 1, 3, 5, and 8.04672 km (5 mi) of each Wave I respondent. The Wave III population density file contains the proportion of 2000 U.S. Census block group population and area (in square meters) within 1, 3, 5, and 8.04672 km (5 mi) of each Wave III respondent. |
27881-0007 & 27881-0020 |
WI: 9 WIII: 9 |
WI: 20,745 WIII: 15,197 |
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Wave I School Distance Measures This file contains the distance between the geocoded point locations of each respondent’s Wave I location and that respondent’s school. |
27881-0009 |
WI: 2 |
WI: 20,745 |
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Reports the distance between each respondent’s geocoded point location for each survey wave and that respondent’s school location, along with the respondent’s move distance between each survey wave. |
27881-0017 |
7 |
20,745 |
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The MSA pseudo code created for each respondent’s Wave III location is in this file. |
27881-0018 |
2 |
15,197 |
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These data files report ACCRA Cost of Living Index data for Wave I and Wave III based on respondent location and the year and quarter of the Add Health interview. |
27881-0031 & 27881-0024 |
WI: 38 WII: 79 |
WI: 20,745 WII: 15,197 |
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Wave I and III Employment Files Certain county-level employment data from the U.S. Bureau of Labor Statistics are attached to Wave I and Wave III respondent locations. |
27881-0032 & 27881-0025 |
WI: 47 WIII: 36 |
WI: 20,745 WIII: 15,197 |
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These data files contain the number of hours of daylight at each Wave I and Wave III respondent location based on that respondent’s latitude and survey date. |
27881-0033 & 27881-0026 |
WI: 2 WIII: 2 |
WI: 20,745 WIII: 15,197 |
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Wave I and III Road Type Length Data Road type length calculations within radii of 1, 3, 5, and 8.05 kilometers (5 miles) of Wave I and Wave III respondent locations. |
27881-0034 & 27881-0027 |
WI: 53 WII: 53 |
WI: 20,745 WIII: 15,197 |
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Wave I and III Rural-Urban Commuting Area (RUCA) Codes These data files define the rural-urban commuting characteristics of Wave I and Wave III respondent locations at the U.S. Census tract-level using the 1990 and 2000 RUCA codes developed by the U.S. department of Agriculture’s Economic Research Service. |
27881-0035 & 27881-0028 |
WI: 3 WIII: 2 |
WI: 20,745 WIII: 15,197 |
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ALCOHOL DENSITY FILE (Study #28841)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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Wave III Alcohol Outlet Density Data This Add Health data file measures the prevalence of alcohol outlets in respondent communities by reporting the tract-level density of establishments possessing on- and/or off-premise alcohol licenses. |
28841-0001 |
10 |
15,197 |
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POLITICAL CONTEXT FILES (Study #28843)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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Wave I, II, III Political Context Data The Add Health Political Context files provide an array of measures that describe the political environments in which Add Health respondents reside. These contextual variables include measures of commuting, election results for gubernatorial, presidential, and senatorial races, and voter registration law. |
28843-0001 through 28843-0003 |
WI: 17 WII: 13 WIII: 44
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WI: 20,745 WII: 14,738 WIII: 15,197
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MEDICATION FILE (Study #29261)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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This file provides the therapeutic classification codes for the medications reported at Wave IV. |
29261-0001 |
6 |
10,711 |
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WAVE IV BIOMARKER FILES (Study #33443)
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DESCRIPTION
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ICPSR STUDY # |
VARIABLES |
OBSERVATIONS |
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This file contains two measures of glucose homeostasis based on the assay of the Wave IV dried blood spots. |
33443-0001 |
10 |
15,701 |
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The results of the assays for CRP (C-reactive protein) and EBV (Epstein-Barr virus) are in this data file. |
33443-0002 |
16 |
15,701 |
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This file contains variables indicating the types of consent (archive, no archive, refused, incarcerated) obtained for the Wave IV blood spot and saliva DNA collections |
33443-0003 |
3 |
15,701 |
